$PSX
Phillips 66 Stock $psx

$psx Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000153470120000070 Filed on February 21, 2020

Income Statement

Concept	2018 Q4	2018 Q3	2018 Q2
Revenue	$29.10B	$29.79B	$28.98B
YoY Change	-2.18%	16.24%	20.31%
Cost Of Revenue	$25.04B	$26.39B	$25.75B
YoY Change	-8.32%	35.56%	40.29%
Gross Profit	$3.644B	$3.403B	$3.233B
YoY Change	40.91%	-44.79%	-43.62%
Gross Profit Margin	12.52%	11.42%	11.16%
Selling, General & Admin	$516.0M	$440.0M	$432.0M
YoY Change	-4.62%	1.15%	-1.59%
% of Gross Profit	14.16%	12.93%	13.36%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$337.0M	$346.0M	$337.0M
YoY Change	-2.6%	2.67%	5.31%
% of Gross Profit	9.25%	10.17%	10.42%
Operating Expenses	$2.144B	$440.0M	$432.0M
YoY Change	4.53%	1.15%	-1.59%
Operating Profit	$1.500B	$2.963B	$2.801B
YoY Change	180.37%	-48.28%	-47.1%
Interest Expense	$1.406B	$421.0M	$329.0M
YoY Change	1251.92%	446.75%	-37.69%
% of Operating Profit	93.73%	14.21%	11.75%
Other Income/Expense, Net	$12.00M	$24.00M	$13.00M
YoY Change	-42.86%	-51.02%	-27.78%
Pretax Income	$2.918B	$1.975B	$1.835B
YoY Change	346.18%	57.25%	116.39%
Income Tax	$546.0M	$407.0M	$431.0M
% Of Pretax Income	18.71%	20.61%	23.49%
Net Earnings	$2.240B	$1.492B	$1.339B
YoY Change	-29.96%	81.29%	143.45%
Net Earnings / Revenue	7.7%	5.01%	4.62%
Basic Earnings Per Share	$4.85	$3.20	$2.86
Diluted Earnings Per Share	$4.82	$3.18	$2.84
COMMON SHARES
Basic Shares Outstanding		466.1M shares	468.3M shares
Diluted Shares Outstanding		469.4M shares	471.6M shares

Balance Sheet

Concept	2018 Q4	2018 Q3	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$3.019B	$924.0M	$1.884B
YoY Change	-3.21%	-40.27%	-12.82%
Cash & Equivalents	$3.019B	$924.0M	$1.884B
Short-Term Investments
Other Short-Term Assets	$474.0M	$875.0M	$621.0M
YoY Change	28.11%	51.38%	36.18%
Inventory	$3.543B	$5.544B	$4.901B
Prepaid Expenses
Receivables	$6.173B	$7.971B	$7.173B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$13.21B	$15.31B	$14.58B
YoY Change	-8.21%	18.39%	17.04%
LONG-TERM ASSETS
Property, Plant & Equipment	$22.02B	$21.63B	$21.47B
YoY Change	2.6%	1.51%	0.81%
Goodwill	$3.270B	$3.270B	$3.270B
YoY Change	0.0%	0.0%	0.0%
Intangibles	$869.0M	$874.0M	$866.0M
YoY Change	-0.8%	-1.13%	-2.59%
Long-Term Investments	$14.22B	$14.31B	$14.18B
YoY Change	3.53%	2.96%	4.96%
Other Assets	$515.0M	$490.0M	$469.0M
YoY Change	18.66%	16.39%	13.56%
Total Long-Term Assets	$41.09B	$40.57B	$40.25B
YoY Change	2.78%	1.99%	2.22%
TOTAL ASSETS
Total Short-Term Assets	$13.21B	$15.31B	$14.58B
Total Long-Term Assets	$41.09B	$40.57B	$40.25B
Total Assets	$54.30B	$55.88B	$54.83B
YoY Change	-0.13%	6.02%	5.78%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$6.113B	$8.444B	$8.437B
YoY Change	-15.59%	31.86%	43.22%
Accrued Expenses	$2.259B	$2.262B	$2.093B
YoY Change	10.79%	17.32%	14.62%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$67.00M	$316.0M	$341.0M
YoY Change	63.41%	-55.24%	-30.83%
Total Short-Term Liabilities	$8.935B	$11.97B	$11.73B
YoY Change	-11.6%	20.89%	32.21%
LONG-TERM LIABILITIES
Long-Term Debt	$11.09B	$11.02B	$11.02B
YoY Change	10.17%	16.07%	16.37%
Other Long-Term Liabilities	$1.846B	$1.783B	$1.920B
YoY Change	4.95%	2.0%	-9.05%
Total Long-Term Liabilities	$12.94B	$12.80B	$12.94B
YoY Change	9.39%	13.88%	11.74%
TOTAL LIABILITIES
Total Short-Term Liabilities	$8.935B	$11.97B	$11.73B
Total Long-Term Liabilities	$12.94B	$12.80B	$12.94B
Total Liabilities	$27.15B	$30.09B	$29.87B
YoY Change	0.76%	4.65%	6.58%
SHAREHOLDERS EQUITY
Retained Earnings	$20.49B	$18.62B	$17.50B
YoY Change	25.65%	38.28%	34.61%
Common Stock	$19.88B	$19.87B	$19.84B
YoY Change	0.53%	1.06%	1.05%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$15.02B	$14.53B	$14.12B
YoY Change	44.76%	46.51%	49.37%
Treasury Stock Shares	189.5M shares	184.5M shares	181.0M shares
Shareholders Equity	$24.65B	$23.32B	$22.54B
YoY Change
Total Liabilities & Shareholders Equity	$54.30B	$55.88B	$54.83B
YoY Change	-0.13%	6.02%	5.78%

Cashflow Statement

Concept	2018 Q4	2018 Q3	2018 Q2
OPERATING ACTIVITIES
Net Income	$2.240B	$1.492B	$1.339B
YoY Change	-29.96%	81.29%	143.45%
Depreciation, Depletion And Amortization	$337.0M	$346.0M	$337.0M
YoY Change	-2.6%	2.67%	5.31%
Cash From Operating Activities	$4.139B	$582.0M	$2.364B
YoY Change	114.34%	45.14%	26.76%
INVESTING ACTIVITIES
Capital Expenditures	-$994.0M	-$779.0M	-$538.0M
YoY Change	85.1%	112.26%	17.47%
Acquisitions
YoY Change
Other Investing Activities	$63.00M	$60.00M	$74.00M
YoY Change	-5.97%	-528.57%	1380.0%
Cash From Investing Activities	-$931.0M	-$719.0M	-$464.0M
YoY Change	98.09%	88.71%	2.43%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-1.098B	-819.0M	-841.0M
YoY Change	-1306.59%	33.82%	-6.97%
NET CHANGE
Cash From Operating Activities	4.139B	582.0M	2.364B
Cash From Investing Activities	-931.0M	-719.0M	-464.0M
Cash From Financing Activities	-1.098B	-819.0M	-841.0M
Net Change In Cash	2.110B	-956.0M	1.059B
YoY Change	35.95%	61.49%	108.46%
FREE CASH FLOW
Cash From Operating Activities	$4.139B	$582.0M	$2.364B
Capital Expenditures	-$994.0M	-$779.0M	-$538.0M
Free Cash Flow	$5.133B	$1.361B	$2.902B
YoY Change	107.98%	77.21%	24.92%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0001534701
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CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	22000000	USD
CY2018Q4	us-gaap	Commercial Paper CommercialPaper	0	USD
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2500000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2500000000	shares
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0	USD
CY2017	us-gaap	Effect Of Lifo Inventory Liquidation On Income EffectOfLIFOInventoryLiquidationOnIncome	0	USD
CY2018	us-gaap	Effect Of Lifo Inventory Liquidation On Income EffectOfLIFOInventoryLiquidationOnIncome	0	USD
CY2018	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	0	USD
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CY2019Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	1415000000	USD
CY2017Q4	us-gaap	Restricted Cash RestrictedCash	0	USD
CY2018Q4	us-gaap	Restricted Cash RestrictedCash	0	USD
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	189526331	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	206390806	shares
CY2019Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fifth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary	321000000	USD
CY2019Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fourth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary	321000000	USD
CY2019Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Second Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary	321000000	USD
CY2019Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Third Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary	321000000	USD
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	001-35349
CY2019	dei	Entity Registrant Name EntityRegistrantName	Phillips 66
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	45-3779385
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	2331 CityWest Blvd
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Houston
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	77042
CY2019	dei	City Area Code CityAreaCode	281
CY2019	dei	Local Phone Number LocalPhoneNumber	293-6600
CY2019	dei	Security12b Title Security12bTitle	Common Stock, $0.01 Par Value
CY2019	dei	Trading Symbol TradingSymbol	PSX
CY2019	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
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CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-205000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	268000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-1000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-3000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	9000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	95000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-202000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	259000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-15000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	1000000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	6000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-4000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	2000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-11000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	1000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	4000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-75000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	378000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	3370000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	5798000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	5626000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	301000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	278000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	142000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3069000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5520000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5484000000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1614000000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3019000000	USD
CY2019Q4	us-gaap	Accounts Notes And Loans Receivable Net Current AccountsNotesAndLoansReceivableNetCurrent	7376000000	USD
CY2018Q4	us-gaap	Accounts Notes And Loans Receivable Net Current AccountsNotesAndLoansReceivableNetCurrent	5414000000	USD
CY2019Q4	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	1134000000	USD
CY2018Q4	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	759000000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	3776000000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	3543000000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	495000000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	474000000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	14395000000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	13209000000	USD
CY2019Q4	us-gaap	Long Term Investments And Receivables Net LongTermInvestmentsAndReceivablesNet	14571000000	USD
CY2018Q4	us-gaap	Long Term Investments And Receivables Net LongTermInvestmentsAndReceivablesNet	14421000000	USD
CY2019Q4	psx	Property Plantand Equipmentand Finance Lease Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetafterAccumulatedDepreciationandAmortization	23786000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	22018000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	3270000000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	3270000000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	869000000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	869000000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1829000000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	515000000	USD
CY2019Q4	us-gaap	Assets Assets	58720000000	USD
CY2018Q4	us-gaap	Assets Assets	54302000000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	8043000000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	6113000000	USD
CY2019Q4	us-gaap	Accounts Payable Related Parties Current AccountsPayableRelatedPartiesCurrent	532000000	USD
CY2018Q4	us-gaap	Accounts Payable Related Parties Current AccountsPayableRelatedPartiesCurrent	473000000	USD
CY2019Q4	us-gaap	Debt Current DebtCurrent	547000000	USD
CY2018Q4	us-gaap	Debt Current DebtCurrent	67000000	USD
CY2019Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	979000000	USD
CY2018Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	1116000000	USD
CY2019Q4	psx	Employee Benefit Obligations Current EmployeeBenefitObligationsCurrent	710000000	USD
CY2018Q4	psx	Employee Benefit Obligations Current EmployeeBenefitObligationsCurrent	724000000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	835000000	USD
CY2018Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	442000000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	11646000000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	8935000000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	11216000000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	11093000000	USD
CY2019Q4	psx	Asset Retirement Obligations And Accrued Environmental Cost AssetRetirementObligationsAndAccruedEnvironmentalCost	638000000	USD
CY2018Q4	psx	Asset Retirement Obligations And Accrued Environmental Cost AssetRetirementObligationsAndAccruedEnvironmentalCost	624000000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	5553000000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	5275000000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	1044000000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	867000000	USD
CY2019Q4	us-gaap	Deferred Credits And Other Liabilities Noncurrent DeferredCreditsAndOtherLiabilitiesNoncurrent	1454000000	USD
CY2018Q4	us-gaap	Deferred Credits And Other Liabilities Noncurrent DeferredCreditsAndOtherLiabilitiesNoncurrent	355000000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	31551000000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	27149000000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	6000000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	6000000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	20301000000	USD
CY2018Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	19873000000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	16673000000	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	15023000000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	22064000000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	20489000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-788000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-692000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	24910000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	24653000000	USD
CY2019Q4	us-gaap	Minority Interest MinorityInterest	2259000000	USD
CY2018Q4	us-gaap	Minority Interest MinorityInterest	2500000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	27169000000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	27153000000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	58720000000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	54302000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	3377000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	5873000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	5248000000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1341000000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1356000000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1318000000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	861000000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	8000000	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	24000000	USD
CY2019	us-gaap	Accretion Expense Including Asset Retirement Obligations AccretionExpenseIncludingAssetRetirementObligations	23000000	USD
CY2018	us-gaap	Accretion Expense Including Asset Retirement Obligations AccretionExpenseIncludingAssetRetirementObligations	23000000	USD
CY2017	us-gaap	Accretion Expense Including Asset Retirement Obligations AccretionExpenseIncludingAssetRetirementObligations	22000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	183000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	252000000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1886000000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	143000000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-221000000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	516000000	USD
CY2019	psx	Gain Loss On Disposition GainLossOnDisposition	20000000	USD
CY2018	psx	Gain Loss On Disposition GainLossOnDisposition	19000000	USD
CY2017	psx	Gain Loss On Disposition GainLossOnDisposition	15000000	USD
CY2019	psx	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain And Bargain Purchase BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainAndBargainPurchase	0	USD
CY2018	psx	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain And Bargain Purchase BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainAndBargainPurchase	0	USD
CY2017	psx	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain And Bargain Purchase BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainAndBargainPurchase	423000000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-16000000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-132000000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	186000000	USD
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	2308000000	USD
CY2018	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-1320000000	USD
CY2017	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	1182000000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	204000000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	202000000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	176000000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	14000000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	113000000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-104000000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	1941000000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-1546000000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	1153000000	USD
CY2019	psx	Increase Decrease In Taxes And Other Accruals IncreaseDecreaseInTaxesAndOtherAccruals	-245000000	USD
CY2018	psx	Increase Decrease In Taxes And Other Accruals IncreaseDecreaseInTaxesAndOtherAccruals	268000000	USD
CY2017	psx	Increase Decrease In Taxes And Other Accruals IncreaseDecreaseInTaxesAndOtherAccruals	163000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	4808000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	7573000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3648000000	USD
CY2019	psx	Capital Expenditures And Investments CapitalExpendituresAndInvestments	3873000000	USD
CY2018	psx	Capital Expenditures And Investments CapitalExpendituresAndInvestments	2639000000	USD
CY2017	psx	Capital Expenditures And Investments CapitalExpendituresAndInvestments	1832000000	USD
CY2019	psx	Proceeds From Asset Dispositions Includes Return Of Investments In Equity Affiliates ProceedsFromAssetDispositionsIncludesReturnOfInvestmentsInEquityAffiliates	157000000	USD
CY2018	psx	Proceeds From Asset Dispositions Includes Return Of Investments In Equity Affiliates ProceedsFromAssetDispositionsIncludesReturnOfInvestmentsInEquityAffiliates	57000000	USD
CY2017	psx	Proceeds From Asset Dispositions Includes Return Of Investments In Equity Affiliates ProceedsFromAssetDispositionsIncludesReturnOfInvestmentsInEquityAffiliates	86000000	USD
CY2019	us-gaap	Payments To Fund Longterm Loans To Related Parties PaymentsToFundLongtermLoansToRelatedParties	98000000	USD
CY2018	us-gaap	Payments To Fund Longterm Loans To Related Parties PaymentsToFundLongtermLoansToRelatedParties	1000000	USD
CY2017	us-gaap	Payments To Fund Longterm Loans To Related Parties PaymentsToFundLongtermLoansToRelatedParties	10000000	USD
CY2019	us-gaap	Proceeds From Collection Of Longterm Loans To Related Parties ProceedsFromCollectionOfLongtermLoansToRelatedParties	95000000	USD
CY2018	us-gaap	Proceeds From Collection Of Longterm Loans To Related Parties ProceedsFromCollectionOfLongtermLoansToRelatedParties	0	USD
CY2017	us-gaap	Proceeds From Collection Of Longterm Loans To Related Parties ProceedsFromCollectionOfLongtermLoansToRelatedParties	326000000	USD
CY2019	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	0	USD
CY2018	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	0	USD
CY2017	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	318000000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-31000000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-112000000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	34000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3688000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2471000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1146000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	1783000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	2184000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	3508000000	USD
CY2019	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	1307000000	USD
CY2018	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	1144000000	USD
CY2017	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	3678000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	32000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	39000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	35000000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1650000000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4645000000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1590000000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1570000000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1436000000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1395000000	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	241000000	USD
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	207000000	USD
CY2017	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	120000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Limited Partners Units ProceedsFromIssuanceOfCommonLimitedPartnersUnits	173000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Limited Partners Units ProceedsFromIssuanceOfCommonLimitedPartnersUnits	128000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Limited Partners Units ProceedsFromIssuanceOfCommonLimitedPartnersUnits	1205000000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	269000000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-86000000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-76000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2511000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-5167000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2111000000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-14000000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-35000000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	17000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1405000000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-100000000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	408000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3019000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3119000000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2711000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1614000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3019000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3119000000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	23725000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	5248000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	378000000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1395000000	USD
CY2017	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1590000000	USD
CY2017	psx	Total Adjustments To Equity From Share Based Compensation TotalAdjustmentsToEquityFromShareBasedCompensation	59000000	USD
CY2017	us-gaap	Partners Capital Account Sale Of Units PartnersCapitalAccountSaleOfUnits	1123000000	USD
CY2017	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	120000000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	27428000000	USD
CY2018Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	49000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	5873000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-75000000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1436000000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	4645000000	USD
CY2018	psx	Total Adjustments To Equity From Share Based Compensation TotalAdjustmentsToEquityFromShareBasedCompensation	51000000	USD
CY2018	us-gaap	Partners Capital Account Sale Of Units PartnersCapitalAccountSaleOfUnits	115000000	USD
CY2019	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="line-height:120%;font-size:10.5pt;"><span style="font-family:inherit;font-size:10.5pt;font-weight:bold;">Recast Financial Information</span><span style="font-family:inherit;font-size:10.5pt;">—Certain prior period financial information has been recast to reflect the current year’s presentation.</span></div>
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;font-size:10.5pt;"><span style="font-family:inherit;font-size:10.5pt;font-weight:bold;">Use of Estimates</span><span style="font-family:inherit;font-size:10.5pt;">—The preparation of financial statements in conformity with generally accepted accounting principles in the United States (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities. Actual results could differ from these estimates.</span></div>
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	207000000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	27153000000	USD
CY2019Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	-9000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	3377000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7000000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1570000000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1650000000	USD
CY2019	psx	Total Adjustments To Equity From Share Based Compensation TotalAdjustmentsToEquityFromShareBasedCompensation	73000000	USD
CY2019	us-gaap	Partners Capital Account Sale Of Units PartnersCapitalAccountSaleOfUnits	141000000	USD
CY2019	psx	Partners Capital Account Incentive Distribution Rights Restructuring Transaction PartnersCapitalAccountIncentiveDistributionRightsRestructuringTransaction	-98000000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	241000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	27169000000	USD
CY2016Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	641594000	shares
CY2016Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	122827000	shares
CY2017	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	18738000	shares
CY2017	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	2241000	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	643835000	shares
CY2017Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	141565000	shares
CY2018	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	47961000	shares
CY2018	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	1857000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	645692000	shares
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	189526000	shares
CY2019	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	16865000	shares
CY2019	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	1725000	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	647417000	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	206391000	shares
CY2017	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	2.73
CY2018	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	3.10
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	3.50
CY2019Q1	us-gaap	Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings Tax Effect TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect	-89000000	USD
CY2019Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1415000000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	102354000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	107293000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	111461000000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	102354000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	107293000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	111461000000	USD
CY2019	psx	Contract With Customer Payment Term ContractWithCustomerPaymentTerm	P30D
CY2019	us-gaap	Property Plant And Equipment Impairment PropertyPlantAndEquipmentImpairment	<div style="line-height:120%;font-size:10.5pt;"><span style="font-family:inherit;font-size:10.5pt;font-weight:bold;">Impairment of Properties, Plants and Equipment</span><span style="font-family:inherit;font-size:10.5pt;">—PP&E used in operations are assessed for impairment whenever changes in facts and circumstances indicate a possible significant deterioration in the future cash flows expected to be generated by an asset group. If indicators of potential impairment exist, an undiscounted cash flow test is performed. If the sum of the undiscounted expected future pre-tax cash flows of an asset group is less than the carrying value of the asset group, including applicable liabilities, the carrying value of the PP&E included in the asset group is written down to estimated fair value and the write down is reported in the “Impairments” line item on our consolidated statement of income in the period in which the impairment determination is made. Individual assets are grouped for impairment purposes at the lowest level for which identifiable cash flows are available (for example, at a refinery complex level). Because there is usually a lack of quoted market prices for long-lived assets, the fair value of impaired assets is typically determined using one or more of the following methods: the present values of expected future cash flows using discount rates and other assumptions believed to be consistent with those used by principal market participants; a market multiple of earnings for similar assets; or historical market transactions including similar assets, adjusted using principal market participant assumptions when necessary. Long-lived assets held for sale are accounted for at the lower of amortized cost or fair value, less cost to sell, with fair value determined using a binding negotiated price, if available, estimated replacement cost, or present value of expected future cash flows as previously described.</span></div><div style="line-height:120%;padding-left:48px;font-size:10.5pt;"><span style="font-family:inherit;font-size:10.5pt;"><br/></span></div><div style="line-height:120%;padding-left:48px;font-size:10.5pt;"><span style="font-family:inherit;font-size:10.5pt;">The expected future cash flows used for impairment reviews and related fair value calculations are based on estimated future volumes, prices, costs, margins and capital project decisions, considering all available evidence at the date of review.</span></div><div style="line-height:120%;padding-left:48px;font-size:10.5pt;"><span style="font-family:inherit;font-size:10.5pt;"><br/></span></div>
CY2019	us-gaap	Number Of Reporting Units NumberOfReportingUnits	3	reporting_unit
CY2019Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	6902000000	USD
CY2018Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	4993000000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Gross ContractWithCustomerAssetGross	336000000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Gross ContractWithCustomerAssetGross	248000000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0	USD
CY2019Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	8510000000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	41000000	USD
CY2019Q4	psx	Accounts And Notes Receivable Percent Outstanding Less Than60 Days AccountsAndNotesReceivablePercentOutstandingLessThan60Days	0.99
CY2019Q4	us-gaap	Inventory Crude Oil Products And Merchandise InventoryCrudeOilProductsAndMerchandise	3452000000	USD
CY2018Q4	us-gaap	Inventory Crude Oil Products And Merchandise InventoryCrudeOilProductsAndMerchandise	3238000000	USD
CY2019Q4	us-gaap	Other Inventory Net Of Reserves OtherInventoryNetOfReserves	324000000	USD
CY2018Q4	us-gaap	Other Inventory Net Of Reserves OtherInventoryNetOfReserves	305000000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	3776000000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	3543000000	USD
CY2019Q4	us-gaap	Lifo Inventory Amount LIFOInventoryAmount	3331000000	USD
CY2018Q4	us-gaap	Lifo Inventory Amount LIFOInventoryAmount	3123000000	USD
CY2019Q4	us-gaap	Excess Of Replacement Or Current Costs Over Stated Lifo Value ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue	4300000000	USD
CY2018Q4	us-gaap	Excess Of Replacement Or Current Costs Over Stated Lifo Value ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue	2900000000	USD
CY2019	psx	Equity Method Investment Summarized Financial Information Income Loss From Continuing Operations Before Income Taxes And Extraordinary Items EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeIncomeTaxesAndExtraordinaryItems	4976000000	USD
CY2018	psx	Equity Method Investment Summarized Financial Information Income Loss From Continuing Operations Before Income Taxes And Extraordinary Items EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeIncomeTaxesAndExtraordinaryItems	6066000000	USD
CY2019	us-gaap	Effect Of Lifo Inventory Liquidation On Income EffectOfLIFOInventoryLiquidationOnIncome	0	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	14284000000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	14218000000	USD
CY2019Q4	us-gaap	Other Investments OtherInvestments	130000000	USD
CY2018Q4	us-gaap	Other Investments OtherInvestments	106000000	USD
CY2019Q4	us-gaap	Long Term Accounts Notes And Loans Receivable Net Noncurrent LongTermAccountsNotesAndLoansReceivableNetNoncurrent	157000000	USD
CY2018Q4	us-gaap	Long Term Accounts Notes And Loans Receivable Net Noncurrent LongTermAccountsNotesAndLoansReceivableNetNoncurrent	97000000	USD
CY2019Q4	us-gaap	Long Term Investments And Receivables Net LongTermInvestmentsAndReceivablesNet	14571000000	USD
CY2018Q4	us-gaap	Long Term Investments And Receivables Net LongTermInvestmentsAndReceivablesNet	14421000000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	2055000000	USD
CY2018	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	2942000000	USD
CY2017	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	1270000000	USD
CY2019Q4	us-gaap	Retained Earnings Undistributed Earnings From Equity Method Investees RetainedEarningsUndistributedEarningsFromEquityMethodInvestees	2360000000	USD
CY2019	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	38156000000	USD
CY2018	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	43627000000	USD
CY2017	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	35523000000	USD
CY2017	psx	Equity Method Investment Summarized Financial Information Income Loss From Continuing Operations Before Income Taxes And Extraordinary Items EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeIncomeTaxesAndExtraordinaryItems	3956000000	USD
CY2019	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	4787000000	USD
CY2018	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	5926000000	USD
CY2017	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	3764000000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Assets EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets	6654000000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Assets EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets	6791000000	USD
CY2017Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Assets EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets	7325000000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Assets EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	56163000000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Assets EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	52649000000	USD
CY2017Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Assets EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	49950000000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Liabilities EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities	6094000000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Liabilities EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities	8047000000	USD
CY2017Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Liabilities EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities	5248000000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Liabilities EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities	15740000000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Liabilities EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities	10695000000	USD
CY2017Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Liabilities EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities	13743000000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Minority Interest EquityMethodInvestmentSummarizedFinancialInformationMinorityInterest	2145000000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Minority Interest EquityMethodInvestmentSummarizedFinancialInformationMinorityInterest	2550000000	USD
CY2017Q4	us-gaap	Equity Method Investment Summarized Financial Information Minority Interest EquityMethodInvestmentSummarizedFinancialInformationMinorityInterest	2549000000	USD
CY2019Q4	psx	Property Plantand Equipmentand Finance Lease Rightof Use Assetbefore Accumulated Depreciationand Amortization PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetbeforeAccumulatedDepreciationandAmortization	38071000000	USD
CY2019Q4	psx	Property Plantand Equipmentand Finance Lease Rightof Use Asset Accumulated Depreciationand Amortization PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetAccumulatedDepreciationandAmortization	14285000000	USD
CY2019Q4	psx	Property Plantand Equipmentand Finance Lease Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetafterAccumulatedDepreciationandAmortization	23786000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	35197000000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	13179000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	22018000000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	3270000000	USD
CY2018	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	0	USD
CY2018Q4	us-gaap	Goodwill Goodwill	3270000000	USD
CY2019	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	0	USD
CY2019Q4	us-gaap	Goodwill Goodwill	3270000000	USD
CY2019Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	752000000	USD
CY2018Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	753000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	117000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	116000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	17000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14000000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	21000000	USD
CY2019Q4	psx	Finite Lived Intangible Assets Estimated Future Amortization Expense FiniteLivedIntangibleAssetsEstimatedFutureAmortizationExpense	20000000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	280000000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	261000000	USD
CY2019Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	441000000	USD
CY2018Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	447000000	USD
CY2019Q4	psx	Asset Retirement Obligation And Accrual For Environmental Loss Contingencies AssetRetirementObligationAndAccrualForEnvironmentalLossContingencies	721000000	USD
CY2018Q4	psx	Asset Retirement Obligation And Accrual For Environmental Loss Contingencies AssetRetirementObligationAndAccrualForEnvironmentalLossContingencies	708000000	USD
CY2019Q4	psx	Asset Retirement Obligation And Accrual For Environmental Loss Contingencies Current AssetRetirementObligationAndAccrualForEnvironmentalLossContingenciesCurrent	83000000	USD
CY2018Q4	psx	Asset Retirement Obligation And Accrual For Environmental Loss Contingencies Current AssetRetirementObligationAndAccrualForEnvironmentalLossContingenciesCurrent	84000000	USD
CY2019Q4	psx	Asset Retirement Obligationand Accrualfor Environmental Loss Contingencies Nonurrent AssetRetirementObligationandAccrualforEnvironmentalLossContingenciesNonurrent	638000000	USD
CY2018Q4	psx	Asset Retirement Obligationand Accrualfor Environmental Loss Contingencies Nonurrent AssetRetirementObligationandAccrualforEnvironmentalLossContingenciesNonurrent	624000000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	261000000	USD
CY2017Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	268000000	USD
CY2019	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	10000000	USD
CY2018	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	10000000	USD
CY2019	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	31000000	USD
CY2018	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	3000000	USD
CY2019	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	22000000	USD
CY2018	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	15000000	USD
CY2019	us-gaap	Asset Retirement Obligation Foreign Currency Translation Gain Loss AssetRetirementObligationForeignCurrencyTranslationGainLoss	0	USD
CY2018	us-gaap	Asset Retirement Obligation Foreign Currency Translation Gain Loss AssetRetirementObligationForeignCurrencyTranslationGainLoss	5000000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	280000000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	261000000	USD
CY2019	us-gaap	Accrual For Environmental Loss Contingencies Period Increase Decrease AccrualForEnvironmentalLossContingenciesPeriodIncreaseDecrease	-6000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	3076000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	3076000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	5595000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	5595000000	USD
CY2018Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	11076000000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	277000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	5106000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	5106000000	USD
CY2019	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	6000000	USD
CY2019	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	2000000	USD
CY2018	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	6000000	USD
CY2018	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	0	USD
CY2017	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	6000000	USD
CY2017	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	0	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	3070000000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	3074000000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	5589000000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	5595000000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	5100000000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	5106000000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	448787000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	451364000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	467483000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	470708000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	511268000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	515090000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Contingently Issuable WeightedAverageNumberOfSharesContingentlyIssuable	2577000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2524000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Contingently Issuable WeightedAverageNumberOfSharesContingentlyIssuable	3225000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3339000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Contingently Issuable WeightedAverageNumberOfSharesContingentlyIssuable	3822000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3418000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	451364000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	453888000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	470708000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	474047000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	515090000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	518508000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.80
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.77
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	11.87
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	11.80
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	9.90
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	9.85
CY2019Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	11576000000	USD
CY2018Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	184000000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	100000000	USD
CY2018Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	100000000	USD
CY2019Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	11763000000	USD
CY2018Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	11160000000	USD
CY2019Q4	us-gaap	Debt Current DebtCurrent	547000000	USD
CY2018Q4	us-gaap	Debt Current DebtCurrent	67000000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	11216000000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	11093000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	547000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	568000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	2012000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	17000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	312000000	USD
CY2019	us-gaap	Debt Instrument Increase Decrease For Period Net DebtInstrumentIncreaseDecreaseForPeriodNet	500000000	USD
CY2019Q4	us-gaap	Commercial Paper CommercialPaper	0	USD
CY2019Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	1000000	USD
CY2019Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On First Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary	321000000	USD
CY2019Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Due After Five Years UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears	1983000000	USD
CY2019	us-gaap	Unrecorded Unconditional Purchase Obligation Purchases UnrecordedUnconditionalPurchaseObligationPurchases	321000000	USD
CY2018	us-gaap	Unrecorded Unconditional Purchase Obligation Purchases UnrecordedUnconditionalPurchaseObligationPurchases	323000000	USD
CY2017	us-gaap	Unrecorded Unconditional Purchase Obligation Purchases UnrecordedUnconditionalPurchaseObligationPurchases	323000000	USD
CY2019Q4	psx	Estimated Percentage Of Derivative Contract Volume Expiring Within Twelve Months EstimatedPercentageOfDerivativeContractVolumeExpiringWithinTwelveMonths	0.98
CY2019Q4	psx	Non Monetary Notional Amount Of Price Risk Derivative Instruments Not Designated As Hedging Instruments Net NonMonetaryNotionalAmountOfPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsNet	16000000	MMBbls
CY2018Q4	psx	Non Monetary Notional Amount Of Price Risk Derivative Instruments Not Designated As Hedging Instruments Net NonMonetaryNotionalAmountOfPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsNet	17000000	MMBbls
CY2019	psx	Payment Term Of Receivables PaymentTermOfReceivables	30 days or less
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1342000000	USD
CY2019Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	1188000000	USD
CY2019Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	0	USD
CY2019Q4	psx	Derivative Asset Difference In Carrying Value And Fair Value DerivativeAssetDifferenceInCarryingValueAndFairValue	0	USD
CY2019Q4	psx	Asset Fair Value Amount Offset Against Collateral AssetFairValueAmountOffsetAgainstCollateral	154000000	USD
CY2019Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	14195000000	USD
CY2019Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	1188000000	USD
CY2019Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	80000000	USD
CY2019Q4	psx	Financial And Nonfinancial Liability Difference Incarrying Value And Fair Value FinancialAndNonfinancialLiabilityDifferenceIncarryingValueAndFairValue	-1438000000	USD
CY2019Q4	psx	Financial And Nonfinancial Liability Fair Value Amount Offset Against Collateral FinancialAndNonfinancialLiabilityFairValueAmountOffsetAgainstCollateral	11489000000	USD
CY2018Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1383000000	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	1075000000	USD
CY2018Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	89000000	USD
CY2018Q4	psx	Derivative Asset Difference In Carrying Value And Fair Value DerivativeAssetDifferenceInCarryingValueAndFairValue	0	USD
CY2018Q4	psx	Asset Fair Value Amount Offset Against Collateral AssetFairValueAmountOffsetAgainstCollateral	219000000	USD
CY2018Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	12027000000	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	1075000000	USD
CY2018Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	0	USD
CY2018Q4	psx	Financial And Nonfinancial Liability Difference Incarrying Value And Fair Value FinancialAndNonfinancialLiabilityDifferenceIncarryingValueAndFairValue	49000000	USD
CY2018Q4	psx	Financial And Nonfinancial Liability Fair Value Amount Offset Against Collateral FinancialAndNonfinancialLiabilityFairValueAmountOffsetAgainstCollateral	11001000000	USD
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	500000000	shares
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	3000000000	USD
	psx	Stock Repurchase Program Cumulative Authorized Amount StockRepurchaseProgramCumulativeAuthorizedAmount	15000000000	USD
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	153968191	shares
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	12000000000	USD
CY2018Q1	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	35000000	shares
CY2018Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3280000000	USD
CY2018Q1	us-gaap	Accelerated Share Repurchases Initial Price Paid Per Share AcceleratedShareRepurchasesInitialPricePaidPerShare	93.725
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	284000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1312000000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	284000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1312000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	18000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	455000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	259000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	806000000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	277000000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1261000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	26000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	488000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	25000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	260000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	23000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	167000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	23000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	111000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	23000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	84000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	243000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	299000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	363000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	1409000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	86000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	148000000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	277000000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1261000000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	20000000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	6000000	USD
CY2019	psx	Finance Lease Cost FinanceLeaseCost	26000000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	531000000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	118000000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	12000000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	16000000	USD
CY2019	us-gaap	Lease Cost LeaseCost	671000000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	6000000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	553000000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	21000000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	342000000	USD
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P11Y1M6D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y7M6D
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.031
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.038
CY2019	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	0.75
CY2019	psx	Defined Contribution Plan Employer Discretionary Contribution Target Percent Of Employees Gross Pay DefinedContributionPlanEmployerDiscretionaryContributionTargetPercentOfEmployeesGrossPay	0.02
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	192000000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	178000000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	101000000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	169000000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	100000000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	142000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	53000000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	45000000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	74000000	USD
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4752808	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	63.11
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	830900	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	94.97
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	17.58
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	553	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	94.85
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	803751	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	39.90
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	51000000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4779404	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	72.55
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	3603296	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	65.69
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	162000000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	3267111	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice	63.57
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue	154000000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	20.69
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	16.95
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	37000000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	62000000	USD
CY2017	psx	Tax Cuts And Jobs Actof2017 Incomplete Accounting Remeasurement Of Deferred Tax Assets And Liabilities Provisional Income Tax Expense Benefit TaxCutsAndJobsActof2017IncompleteAccountingRemeasurementOfDeferredTaxAssetsAndLiabilitiesProvisionalIncomeTaxExpenseBenefit	-2870000000	USD
CY2017	psx	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Deemed Repatriation Tax Liability Provisional Income Tax Expense TaxCutsAndJobsActOf2017IncompleteAccountingDeemedRepatriationTaxLiabilityProvisionalIncomeTaxExpense	149000000	USD
CY2018	us-gaap	Tax Cuts And Jobs Act Of2017 Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncomeTaxExpenseBenefit	36000000	USD
CY2019	us-gaap	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Deferred Tax Asset Income Tax Expense TaxCutsAndJobsActOf2017ChangeInTaxRateDeferredTaxAssetIncomeTaxExpense	-42000000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	354000000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	739000000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	9000000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	177000000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	257000000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1960000000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	204000000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	326000000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	126000000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-50000000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	53000000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	3000000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	61000000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	255000000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	61000000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	55000000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-58000000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	68000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	801000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1572000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1693000000	USD
CY2019Q4	psx	Deferred Tax Liabilities Property Plant And Equipment And Intangible Assets DeferredTaxLiabilitiesPropertyPlantAndEquipmentAndIntangibleAssets	3297000000	USD
CY2018Q4	psx	Deferred Tax Liabilities Property Plant And Equipment And Intangible Assets DeferredTaxLiabilitiesPropertyPlantAndEquipmentAndIntangibleAssets	3074000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	2137000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	2041000000	USD
CY2019Q4	psx	Deferred Tax Liabilities Investments In Subsidiaries And Equity Method Investments DeferredTaxLiabilitiesInvestmentsInSubsidiariesAndEquityMethodInvestments	794000000	USD
CY2018Q4	psx	Deferred Tax Liabilities Investments In Subsidiaries And Equity Method Investments DeferredTaxLiabilitiesInvestmentsInSubsidiariesAndEquityMethodInvestments	602000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Inventory Costs DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts	0	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Inventory Costs DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts	66000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	263000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	14000000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	6491000000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	5797000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	460000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	395000000	USD
CY2019Q4	psx	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations And Environmental Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligationsAndEnvironmentalLiabilities	115000000	USD
CY2018Q4	psx	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations And Environmental Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligationsAndEnvironmentalLiabilities	109000000	USD
CY2019Q4	psx	Deferred Tax Assets Operating Loss Capital Loss And Foreign Tax Credit Carryforwards DeferredTaxAssetsOperatingLossCapitalLossAndForeignTaxCreditCarryforwards	54000000	USD
CY2018Q4	psx	Deferred Tax Assets Operating Loss Capital Loss And Foreign Tax Credit Carryforwards DeferredTaxAssetsOperatingLossCapitalLossAndForeignTaxCreditCarryforwards	59000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	70000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	16000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	28000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	281000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1008000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	579000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	22000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	8000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	986000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	571000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	5505000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	5226000000	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	14000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	23000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	34000000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	70000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2000000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	29000000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	14000000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	2000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	5000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	10000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	32000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	40000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	23000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	34000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	15000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	1000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	5000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	10000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	5000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	8000000	USD
CY2019	psx	Increase Decrease In Income Tax Penalties And Interest Accrued IncreaseDecreaseInIncomeTaxPenaltiesAndInterestAccrued	-3000000	USD
CY2017	psx	Increase Decrease In Income Tax Penalties And Interest Accrued IncreaseDecreaseInIncomeTaxPenaltiesAndInterestAccrued	1000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	3267000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	5716000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	2799000000	USD
CY2019	psx	Income Loss From Continuing Operations Before Income Taxes Domestic Percentage Of Total Income Loss From Continuing Operations Before Income Taxes1 IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomesticPercentageOfTotalIncomeLossFromContinuingOperationsBeforeIncomeTaxes1	0.782
CY2018	psx	Income Loss From Continuing Operations Before Income Taxes Domestic Percentage Of Total Income Loss From Continuing Operations Before Income Taxes1 IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomesticPercentageOfTotalIncomeLossFromContinuingOperationsBeforeIncomeTaxes1	0.768
CY2017	psx	Income Loss From Continuing Operations Before Income Taxes Domestic Percentage Of Total Income Loss From Continuing Operations Before Income Taxes1 IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomesticPercentageOfTotalIncomeLossFromContinuingOperationsBeforeIncomeTaxes1	0.787
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	911000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	1729000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	756000000	USD
CY2019	psx	Income Loss From Continuing Operations Before Income Taxes Foreign Percentage Of Total Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeignPercentageOfTotalIncomeLossFromContinuingOperationsBeforeIncomeTaxes	0.218
CY2018	psx	Income Loss From Continuing Operations Before Income Taxes Foreign Percentage Of Total Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeignPercentageOfTotalIncomeLossFromContinuingOperationsBeforeIncomeTaxes	0.232
CY2017	psx	Income Loss From Continuing Operations Before Income Taxes Foreign Percentage Of Total Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeignPercentageOfTotalIncomeLossFromContinuingOperationsBeforeIncomeTaxes	0.213
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	4178000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	7445000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3555000000	USD
CY2019	psx	Income Loss From Continuing Operations Before Income Taxes Percentage Of Total Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxesPercentageOfTotalIncomeLossFromContinuingOperationsBeforeIncomeTaxes	1.000
CY2018	psx	Income Loss From Continuing Operations Before Income Taxes Percentage Of Total Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxesPercentageOfTotalIncomeLossFromContinuingOperationsBeforeIncomeTaxes	1.000
CY2017	psx	Income Loss From Continuing Operations Before Income Taxes Percentage Of Total Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxesPercentageOfTotalIncomeLossFromContinuingOperationsBeforeIncomeTaxes	1.000
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	877000000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1563000000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1244000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	92000000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	155000000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	79000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.022
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.021
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.022
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-42000000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	36000000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-2721000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.010
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.005
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.765
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-31000000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-3000000	USD
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-137000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.007
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.039
CY2019	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	61000000	USD
CY2018	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	58000000	USD
CY2017	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	46000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.015
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.008
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.013
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	14000000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-20000000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-4000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.003
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.003
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.001
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-48000000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-101000000	USD
CY2017	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	2596000000	USD
CY2019	psx	Related Party Transaction Purchases From Transactions With Related Party RelatedPartyTransactionPurchasesFromTransactionsWithRelatedParty	11726000000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	102000000	USD
CY2019Q4	us-gaap	Restricted Cash RestrictedCash	0	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-108000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.011
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.014
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.030
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	801000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1572000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1693000000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.192
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.211
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.476
CY2019	us-gaap	Income Tax Effects Allocated Directly To Equity IncomeTaxEffectsAllocatedDirectlyToEquity	123000000	USD
CY2018	us-gaap	Income Tax Effects Allocated Directly To Equity IncomeTaxEffectsAllocatedDirectlyToEquity	13000000	USD
CY2017	us-gaap	Income Tax Effects Allocated Directly To Equity IncomeTaxEffectsAllocatedDirectlyToEquity	81000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	266000000	USD
CY2017	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-112000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	378000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-174000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-75000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-50000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7000000	USD
CY2019Q1	us-gaap	Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings Tax Effect TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect	-89000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	426000000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	465000000	USD
CY2019	psx	Interest And Debt Costs Incurred Debt InterestAndDebtCostsIncurredDebt	504000000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	421000000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	955000000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	984000000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-257000000	USD
CY2018	psx	Related Party Transaction Purchases From Transactions With Related Party RelatedPartyTransactionPurchasesFromTransactionsWithRelatedParty	12755000000	USD
CY2017	psx	Related Party Transaction Purchases From Transactions With Related Party RelatedPartyTransactionPurchasesFromTransactionsWithRelatedParty	10468000000	USD
CY2018	psx	Interest And Debt Costs Incurred Debt InterestAndDebtCostsIncurredDebt	493000000	USD
CY2017	psx	Interest And Debt Costs Incurred Debt InterestAndDebtCostsIncurredDebt	432000000	USD
CY2019	psx	Interest And Debt Costs Incurred Other InterestAndDebtCostsIncurredOther	31000000	USD
CY2018	psx	Interest And Debt Costs Incurred Other InterestAndDebtCostsIncurredOther	28000000	USD
CY2017	psx	Interest And Debt Costs Incurred Other InterestAndDebtCostsIncurredOther	21000000	USD
CY2019	psx	Interest And Debt Costs Incurred InterestAndDebtCostsIncurred	535000000	USD
CY2018	psx	Interest And Debt Costs Incurred InterestAndDebtCostsIncurred	521000000	USD
CY2017	psx	Interest And Debt Costs Incurred InterestAndDebtCostsIncurred	453000000	USD
CY2019	psx	Interest And Debt Costs Capitalized Adjustment InterestAndDebtCostsCapitalizedAdjustment	77000000	USD
CY2018	psx	Interest And Debt Costs Capitalized Adjustment InterestAndDebtCostsCapitalizedAdjustment	17000000	USD
CY2017	psx	Interest And Debt Costs Capitalized Adjustment InterestAndDebtCostsCapitalizedAdjustment	15000000	USD
CY2019	us-gaap	Interest And Debt Expense InterestAndDebtExpense	458000000	USD
CY2018	us-gaap	Interest And Debt Expense InterestAndDebtExpense	504000000	USD
CY2017	us-gaap	Interest And Debt Expense InterestAndDebtExpense	438000000	USD
CY2019	us-gaap	Interest Income Other InterestIncomeOther	43000000	USD
CY2018	us-gaap	Interest Income Other InterestIncomeOther	45000000	USD
CY2017	us-gaap	Interest Income Other InterestIncomeOther	31000000	USD
CY2019	psx	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain And Bargain Purchase BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainAndBargainPurchase	0	USD
CY2018	psx	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain And Bargain Purchase BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainAndBargainPurchase	0	USD
CY2017	psx	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain And Bargain Purchase BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainAndBargainPurchase	423000000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	76000000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	16000000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	67000000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	119000000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	61000000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	521000000	USD
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	54000000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	55000000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	60000000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	63000000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	68000000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	76000000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-5000000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	31000000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	0	USD
CY2019	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	2977000000	USD
CY2018	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	3514000000	USD
CY2019	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	96000000	USD
CY2018	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	59000000	USD
CY2017	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	79000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	107293000000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1356000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	111461000000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	102354000000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2127000000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2676000000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1732000000	USD
CY2019	psx	Segment Reporting Information Depreciation Amortization And Impairments SegmentReportingInformationDepreciationAmortizationAndImpairments	2202000000	USD
CY2018	psx	Segment Reporting Information Depreciation Amortization And Impairments SegmentReportingInformationDepreciationAmortizationAndImpairments	1364000000	USD
CY2017	psx	Segment Reporting Information Depreciation Amortization And Impairments SegmentReportingInformationDepreciationAmortizationAndImpairments	1342000000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	43000000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	45000000	USD
CY2017	us-gaap	Investment Income Interest InvestmentIncomeInterest	31000000	USD
CY2019	us-gaap	Income Loss Including Portion Attributable To Noncontrolling Interest IncomeLossIncludingPortionAttributableToNoncontrollingInterest	4178000000	USD
CY2018	us-gaap	Income Loss Including Portion Attributable To Noncontrolling Interest IncomeLossIncludingPortionAttributableToNoncontrollingInterest	7445000000	USD
CY2017	us-gaap	Income Loss Including Portion Attributable To Noncontrolling Interest IncomeLossIncludingPortionAttributableToNoncontrollingInterest	3555000000	USD
CY2019Q4	us-gaap	Investments In And Advances To Affiliates At Fair Value InvestmentsInAndAdvancesToAffiliatesAtFairValue	14300000000	USD
CY2018Q4	us-gaap	Investments In And Advances To Affiliates At Fair Value InvestmentsInAndAdvancesToAffiliatesAtFairValue	14231000000	USD
CY2017Q4	us-gaap	Investments In And Advances To Affiliates At Fair Value InvestmentsInAndAdvancesToAffiliatesAtFairValue	13744000000	USD
CY2019Q4	us-gaap	Assets Assets	58720000000	USD
CY2018Q4	us-gaap	Assets Assets	54302000000	USD
CY2017Q4	us-gaap	Assets Assets	54371000000	USD
CY2019	psx	Segment Reporting Information Capital Expenditures And Investments SegmentReportingInformationCapitalExpendituresAndInvestments	3873000000	USD
CY2018	psx	Segment Reporting Information Capital Expenditures And Investments SegmentReportingInformationCapitalExpendituresAndInvestments	2639000000	USD
CY2017	psx	Segment Reporting Information Capital Expenditures And Investments SegmentReportingInformationCapitalExpendituresAndInvestments	1832000000	USD
CY2019Q4	us-gaap	Noncurrent Assets NoncurrentAssets	38357000000	USD
CY2018Q4	us-gaap	Noncurrent Assets NoncurrentAssets	36439000000	USD
CY2017Q4	us-gaap	Noncurrent Assets NoncurrentAssets	35401000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	107293000000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2127000000	USD
CY2019	psx	Gain Loss On Disposition GainLossOnDisposition	20000000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	119000000	USD
CY2019	psx	Revenues And Other Income RevenuesAndOtherIncome	109559000000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	95529000000	USD
CY2019	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	5074000000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	1681000000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1341000000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	861000000	USD
CY2019	psx	Taxes Other Than Income Taxes Excluding Excise Taxes TaxesOtherThanIncomeTaxesExcludingExciseTaxes	409000000	USD
CY2019	us-gaap	Accretion Expense Including Asset Retirement Obligations AccretionExpenseIncludingAssetRetirementObligations	23000000	USD
CY2019	us-gaap	Interest And Debt Expense InterestAndDebtExpense	458000000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-5000000	USD
CY2019	psx	Cost And Expenses CostAndExpenses	105381000000	USD
CY2019	us-gaap	Income Loss Including Portion Attributable To Noncontrolling Interest IncomeLossIncludingPortionAttributableToNoncontrollingInterest	4178000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	801000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	3377000000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	301000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	3076000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	3370000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	111461000000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2676000000	USD
CY2018	psx	Gain Loss On Disposition GainLossOnDisposition	19000000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	61000000	USD
CY2018	psx	Revenues And Other Income RevenuesAndOtherIncome	114217000000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	97930000000	USD
CY2018	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	4880000000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	1677000000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	8000000	USD
CY2018	psx	Taxes Other Than Income Taxes Excluding Excise Taxes TaxesOtherThanIncomeTaxesExcludingExciseTaxes	425000000	USD
CY2018	us-gaap	Accretion Expense Including Asset Retirement Obligations AccretionExpenseIncludingAssetRetirementObligations	23000000	USD
CY2018	us-gaap	Interest And Debt Expense InterestAndDebtExpense	504000000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	31000000	USD
CY2018	psx	Cost And Expenses CostAndExpenses	106772000000	USD
CY2018	us-gaap	Income Loss Including Portion Attributable To Noncontrolling Interest IncomeLossIncludingPortionAttributableToNoncontrollingInterest	7445000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1572000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	5873000000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	278000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	5595000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	5798000000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	102354000000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1732000000	USD
CY2017	psx	Gain Loss On Disposition GainLossOnDisposition	15000000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	521000000	USD
CY2017	psx	Revenues And Other Income RevenuesAndOtherIncome	104622000000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	79409000000	USD
CY2017	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	4699000000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	1695000000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1318000000	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	24000000	USD
CY2017	psx	Taxes Other Than Income Taxes Including Excise Taxes TaxesOtherThanIncomeTaxesIncludingExciseTaxes	13462000000	USD
CY2017	us-gaap	Accretion Expense Including Asset Retirement Obligations AccretionExpenseIncludingAssetRetirementObligations	22000000	USD
CY2017	us-gaap	Interest And Debt Expense InterestAndDebtExpense	438000000	USD
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CY2017	us-gaap	Income Loss Including Portion Attributable To Noncontrolling Interest IncomeLossIncludingPortionAttributableToNoncontrollingInterest	3555000000	USD
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Files In Submission

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$PSX
Phillips 66 Stock $psx

2018 Q4 Form 10-K Financial Statement

#000153470120000070 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$PSX Phillips 66 Stock $psx

2018 Q4 Form 10-K Financial Statement

#000153470120000070 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$PSX
Phillips 66 Stock $psx